What is it about? It catalogs instances where politicians, big business, central banks, media and the wealthiest individuals all work together to mislead us and work against us. How their agenda ends up being bad for democracy, the environment and freedom. I think it's a reasonable working theory. Sadly most people don't. Look at recent events- how many people are up in arms about a performance at the recent music awards show versus how many people are up in arms about the president talking about using missiles to kill people in yet another country we aren't at war with?
I think The Onion nailed it with this article. It's meant as parody but it really nails the current news environment. They are multi-billion dollar corporations whose primary purpose is to make money. We should probably stop considering them a reliable source of information.